我有一个应用程序,有时需要它的导航栏融入内容。
有人知道怎么去掉或者改变这个烦人的小条的颜色吗?
在下图中,我说的是根视图控制器下面1px的高度线
我有一个应用程序,有时需要它的导航栏融入内容。
有人知道怎么去掉或者改变这个烦人的小条的颜色吗?
在下图中,我说的是根视图控制器下面1px的高度线
当前回答
想把Serhii回答的Swift版本加进去。我用下面的代码创建了一个uibareextension .swift:
import Foundation
import UIKit
extension UINavigationBar {
func hideBottomHairline() {
self.hairlineImageView?.isHidden = true
}
func showBottomHairline() {
self.hairlineImageView?.isHidden = false
}
}
extension UIToolbar {
func hideBottomHairline() {
self.hairlineImageView?.isHidden = true
}
func showBottomHairline() {
self.hairlineImageView?.isHidden = false
}
}
extension UIView {
fileprivate var hairlineImageView: UIImageView? {
return hairlineImageView(in: self)
}
fileprivate func hairlineImageView(in view: UIView) -> UIImageView? {
if let imageView = view as? UIImageView, imageView.bounds.height <= 1.0 {
return imageView
}
for subview in view.subviews {
if let imageView = self.hairlineImageView(in: subview) { return imageView }
}
return nil
}
}
其他回答
我的方法:
UINavigationBar.appearance().setBackgroundImage(
UIImage(),
forBarPosition: .Any,
barMetrics: .Default)
var _width:CGFloat! = self.navigationController?.navigationBar.layer.frame.width
var _height:CGFloat! = self.navigationController?.navigationBar.layer.frame.height
var navBarBg = UIView(frame:CGRectMake(0, 0, _width, _height))
//solid color for bg
navBarBg.backgroundColor = UIColor.orangeColor()
view.addSubview(navBarBg)
这里有一个不使用任何图像的方法,这是唯一适合我的方法:
self.navigationController.navigationBar.layer.shadowOpacity = 0;
不幸的是,您需要在每个不希望出现该行的文件上执行此操作。在appDelegate中没有办法这样做。
编辑:
设置shadowColor为nil是不需要的,这是你唯一需要的行。
在Xamarin Forms中,这对我来说很管用。只需在AppDelegate.cs上添加这个:
UINavigationBar.Appearance.ShadowImage = new UIImage();
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
UIImage *emptyImage = [UIImage new];
self.navigationController.navigationBar.shadowImage = emptyImage;
[self.navigationController.navigationBar setBackgroundImage:emptyImage forBarMetrics:UIBarMetricsDefault];
}
if #available(iOS 13.0, *) {
let appearance = UINavigationBarAppearance()
appearance.backgroundColor = Colors.color_app
appearance.titleTextAttributes = [.foregroundColor : UIColor.white]
appearance.largeTitleTextAttributes = [.foregroundColor : UIColor.white]
appearance.shadowColor = .clear
appearance.shadowImage = UIImage()
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().standardAppearance = appearance
UINavigationBar.appearance().compactAppearance = appearance
UINavigationBar.appearance().scrollEdgeAppearance = appearance
} else {
UINavigationBar.appearance().barTintColor = Colors.color_app
UINavigationBar.appearance().tintColor = .white
UINavigationBar.appearance().titleTextAttributes = [NSAttributedString.Key.foregroundColor : UIColor.white]
if #available(iOS 11.0, *) {
UINavigationBar.appearance().largeTitleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.white]
}
UINavigationBar.appearance().isTranslucent = false
UINavigationBar.appearance().shadowImage = UIImage()
UINavigationBar.appearance().setBackgroundImage(UIImage(), for: .default)
}